As with all unit-conversion problems, this is a matter of multiplying by fractions made of pairs of units that form special versions of multiplication by 1 — in order to cancel out the units you have, and result in the units you want. Here, the units we want are “water bottles“, and we know that one water bottle is equal to 16.9 oz. read more
Different empty water bottles weight different amounts. The weakest disposable one weigh about 1/3 of an ounce, giving about 190 to 200 bottles to reach 64 ounces. A stiffer disposable bottle weighs about 1 oz. giving 64 bottles. Non disposable bottles could weigh 4 oz giving 16 bottles. read more
The water-bottle guy sells you "16.9 fl oz" at a time, so that allhe has to do is print a different label and he can sell "0.5 liters" in the samebottle to the rest of the world, where they learned to stop hating the liter anddumped the fl oz a long time ago. read more
usually a glass of water is about 6 ounces, so 8 glasses of water is about 48 ounces. if you drink 3 16.9 oz. water bottles that would be about 50 ounces and you would be ok. just remember that water can be taken in any form so to get your required 48 ounces of water each day, you dont necessarily have to drink 3 16.9 oz. water bottles daily. read more